in this paper, the interactions of flow over two circular or rectangular cylinders, passing by each other, have been investigated, using overset grids method. two-dimensional incompressible governing fluid flow equations are solved using finite volume method. in this research, several interpolation methods have been tested to transfer data between grids. one of them called mass flux base interp...

Over the last few years, several Grids have been set up to share resources such as computers, data, and instruments to enable collaborative research. These Grids follow models and heterogeneous policies restricted by the requirements of e-Science applications for which they have been created, which has resulted in islands of Grids. A structure that allows Grids to grow in a scalable manner by a...

Smart grids are promoted to resolve challenges of electricity production and consumption. Social studies of smart grids have been undertaken that utilise practice theory to explore and gain insight on the development of smart grids with a particular focus on households. This perspective usefully describes practices in which electricity is used in households. However, reducing smart grid ecologi...

In recent years novel distributed computing environments termed grids have emerged. Superficially, grids are considered successors to, and more sophisticated and powerful versions of, conventional distributed environments. This paper investigates the intrinsic differences between grids and other distributed environments. From this analysis it is concluded that minimally, grids must support user...

International data grids are now being built that support joint management of shared collections. An emerging strategy is to build multiple independent data grids, each managed by the local institution. The data grids are then federated to enable controlled sharing of files. We examine the management issues associated with maintaining federations of production data grids, including management o...

Oscilloscopes and their cousins, logic analyzers, are the tools of choice for difficult electronic hardware problems. In the hands of a skilled engineer or technician, these tools can be used to solve stubborn problems. The key to the utility of oscilloscopes is the depth of detail they provide and their flexibility, which allows the level of detail to be adjusted to fit the task at hand. Distr...

The proportion of renewable energies in power generation has increased according to the political aims in recent years. In low-voltage grids, these are mostly decentralized renewable energy systems such as photovoltaic (PV) that are connected through inverters to the grid. The temporary reversal of the power flow causes overvoltage problems. Consequently, regenerative sources need to be turned ...